CN210715871U - Differential lubrication system - Google Patents
Differential lubrication system Download PDFInfo
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- CN210715871U CN210715871U CN201920986099.5U CN201920986099U CN210715871U CN 210715871 U CN210715871 U CN 210715871U CN 201920986099 U CN201920986099 U CN 201920986099U CN 210715871 U CN210715871 U CN 210715871U
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Abstract
The utility model discloses a differential lubrication system, including differential housing and planetary gear and the half axle gear that is located differential housing, be equipped with the half axle mounting hole and the half axle gear mounting hole that are used for installing half axle and half axle gear in the differential housing, lubricating system is including setting up casing lubrication portion on differential housing, setting up planetary gear lubrication portion on planetary gear, setting up half axle gear lubrication portion on half axle gear; this application has seted up eccentric annular lubrication groove on the relative rotation face of planetary gear, side gear and differential mechanism casing, and all relative rotation faces can be swept at the pivoted in-process to partial annular lubrication groove, and then can provide effectual lubrication for planetary gear and differential mechanism casing, side gear and differential mechanism casing, and circular lubrication oil duct processing is convenient moreover, low in manufacturing cost, and the machining precision is easily controlled.
Description
Technical Field
The utility model relates to a differential mechanism technical field specifically is a differential mechanism lubricating system.
Background
The automobile differential mechanism can realize a mechanism that left and right (or front and rear) driving wheels rotate at different rotating speeds. Mainly comprises a left half shaft gear, a right half shaft gear, two planet gears and a gear carrier. The function is that when the automobile turns or runs on an uneven road surface, the left wheel and the right wheel roll at different rotating speeds, namely, the pure rolling motion of the driving wheels at two sides is ensured. The differential is provided for adjusting the difference in the rotational speeds of the left and right wheels. In four-wheel drive, all the wheels must be connected to drive four wheels, if the four wheels are mechanically connected, the vehicle cannot rotate at the same speed when the vehicle runs on a curve, and in order to make the curve running rotation speed of the vehicle substantially consistent, an intermediate differential is added to adjust the rotation speed difference between the front wheel and the rear wheel.
The existing internal lubricating system of the differential is not perfect, and a lubricating oil hole is drilled on the tooth root of a planetary gear or a half gear generally. Generally, 3 holes are drilled in each gear axially, and because the gears are obliquely machined and tooth surfaces of the gears need to be avoided, the machining is very difficult, the cost is high, and the lubricating effect is poor; there is not any oil groove design with planet wheel gasket contact surface on the left and right differential mechanism casing, and lubricated effect is not good, and half gear and differential mechanism shell diameter of axle department also do not design the lubrication groove. The lubricating effect is very poor, and the gear is easy to extrude to cause high temperature and deterioration. Poor lubricating effect and short service life.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a differential mechanism lubricating system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a differential lubrication system comprises a differential shell, a planetary gear and a half axle gear, wherein the planetary gear and the half axle gear are positioned in the differential shell, a half axle mounting hole and a half axle gear mounting hole are formed in the differential shell and used for mounting a half axle and the half axle gear, and the lubrication system comprises a shell lubrication part arranged on the differential shell, a planetary gear lubrication part arranged on the planetary gear and a half axle gear lubrication part arranged on the half axle gear;
the shell lubricating part comprises at least one first lubricating oil channel arranged on the inner wall of the axle shaft mounting hole and at least one second lubricating oil channel arranged on the inner wall of the axle shaft gear mounting hole;
the planetary gear lubricating part comprises a planetary gear, a planetary gear gasket is arranged at one end of the planetary gear, which is in contact with the differential case, a third lubricating oil channel is formed at one end of the planetary gear, which is close to the planetary gear gasket, and a fourth lubricating oil channel is formed at one end of the planetary gear gasket, which is far away from the planetary gear;
the half axle gear lubricating part comprises a half axle gear, a half axle gear gasket is arranged between the half axle gear and the inner wall of the differential case, a fifth lubricating oil channel is formed in one end, close to the half axle gear gasket, of the half axle gear, and a sixth lubricating oil channel is formed in at least one end face of the half axle gear gasket.
As a further aspect of the present invention: the differential shell comprises a first shell and a second shell which are fixedly connected, and a half axle mounting hole and a half axle gear mounting hole are formed in the first shell and the second shell.
As a further aspect of the present invention: first lubricated oil duct and second lubricated oil duct all are equipped with two, first lubricated oil duct and second lubricated oil duct are closed loop configuration, first lubricated oil duct and the projection of second lubricated oil duct on differential case casing axial direction are circular.
As a further aspect of the present invention: at least one lubricating oil groove is formed in the end face, far away from the axle shaft mounting hole, of one side of the axle shaft gear mounting hole, and the lubricating oil groove is close to one end of the axle shaft gear mounting hole and communicated with the axle shaft gear mounting hole.
As a further aspect of the present invention: the axial line position of planetary gear with the planetary gear gasket has all seted up the shaft hole, the planetary gear gasket is spherical annular structure, planetary gear with the contact surface of planetary gear gasket is spherical annular structure.
As a further aspect of the present invention: the third lubricated oil duct is eccentric circular oil duct, the third lubricated oil duct is close to the one end of planetary gear axis with planetary gear's shaft hole is tangent, the third lubricated oil duct is kept away from planetary gear axis's one end with on the planetary gear the excircle of spherical annular contact surface is tangent.
As a further aspect of the present invention: the fourth lubricating oil duct is eccentric circular oil duct, the fourth lubricating oil duct is close to the one end of planetary gear gasket axis with the interior circle of planetary gear gasket is tangent, the fourth lubricating oil duct is kept away from the one end of planetary gear gasket axis with the excircle of planetary gear gasket is tangent.
As a further aspect of the present invention: the differential mechanism comprises a differential mechanism shell, a differential mechanism shell and a half shaft gear, wherein the differential mechanism shell is provided with an inner circle, a contact surface of the inner wall of the differential mechanism shell is of a plane circular structure, a fifth lubricating oil passage is an eccentric annular oil passage, the fifth lubricating oil passage is close to one end of a half shaft gear axis and the inner circle of the annular contact surface are tangent, and the one end of the half shaft gear axis and the inner circle of the annular contact surface are tangent.
As a further aspect of the present invention: the half shaft gear gasket is of a planar annular structure, the sixth lubricating oil channel is close to one end of the axis of the half shaft gear gasket and the inner circle of the half shaft gear gasket are tangent, and the sixth lubricating oil channel is far away from one end of the axis of the half shaft gear gasket and the outer circle of the half shaft gear gasket are tangent.
As a further aspect of the present invention: and sixth lubricating oil channels are formed in the end faces of the two sides of the half axle gear gasket 35.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the lubricating oil channels are arranged at the half axle mounting holes and the half axle gear mounting holes, and the oil grooves are formed in the contact positions of the inner wall of the differential mechanism and the half axle gear, so that effective lubrication can be provided for the relative motion between the half axle and the differential mechanism and between the axle of the half axle gear and the differential mechanism, lubrication can be provided for the axle journal of the half axle gear and the axle journal of the half axle, the phenomenon of extrusion of an effective house occurs, and the transmission stability is improved;
2. the eccentric annular lubricating oil groove is formed in the opposite rotating surfaces of the planetary gear, the half axle gear and the differential case, and the eccentric annular lubricating oil groove can sweep all the opposite rotating surfaces in the rotating process, so that effective lubrication can be provided for the planetary gear and the differential case, and the half axle gear and the differential case;
3. this application is through setting up eccentric circular gear on planetary gear gasket, side gear gasket, provides the lubrication to planetary gear and differential mechanism casing, side gear and differential mechanism casing through gasket and the lubricated oil duct of setting on the gasket, has reduced the wearing and tearing between gasket and differential mechanism casing or the gear, has improved life, can accomplish the non-maintaining of lifetime.
Drawings
FIG. 1 is a sectional view of the present embodiment;
FIG. 2 is a cross-sectional view of the differential case of the present embodiment;
FIG. 3 is a front sectional view of the planetary gear portion of the present embodiment;
FIG. 4 is a side view of the planetary gear of the present embodiment;
FIG. 5 is a front view of the planetary gear spacer of the present embodiment;
FIG. 6 is a cross-sectional view of the side gear of the embodiment;
FIG. 7 is a front view of the side gear of the embodiment;
fig. 8 is a front view of the side gear spacer of the present embodiment.
In the figure: 1-differential case lubrication portion, 11-first case, 12-second case, 13-half shaft mounting hole, 14-first lubrication oil channel, 15-side gear mounting hole, 16-second lubrication oil channel, 17-lubrication oil groove, 2-planetary gear lubrication portion, 21-planetary gear, 22-third lubrication oil channel, 23-planetary gear gasket, 24-fourth lubrication oil channel, 25-cross shaft, 3-side gear lubrication portion, 31-side gear, 32-first lubrication surface, 33-second lubrication surface, 34-fifth lubrication oil channel, 35-side gear gasket, 36-sixth lubrication oil channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-8, in an embodiment of the present invention, a differential lubrication system includes a differential case, and a planetary gear and a side gear located in the differential case, the differential case includes a first case 11 and a second case 12 fixedly connected to each other, the first case 11 and the second case 12 enclose a cavity for mounting the planetary gear and the side gear, the planetary gear and the side gear are engaged and mounted to be pinched by the cavity, a half shaft mounting hole 13 and a half shaft gear mounting hole 15 for mounting a half shaft and the side gear are provided in each of the first case 11 and the second case 12, and the half shaft mounting hole 13 and the half shaft gear mounting hole 15 are coaxially arranged with the differential case;
the lubricating system comprises a shell lubricating part 1 arranged on the differential shell, a planetary gear lubricating part 2 arranged on the planetary gear and a half axle gear lubricating part 3 arranged on the half axle gear;
the housing lubricating part 1 comprises a first lubricating oil channel 14 arranged on the inner wall of the half axle mounting hole 13 and a second lubricating oil channel 16 arranged on the inner wall of the half axle gear mounting hole 15, two first lubricating oil channels 14 and two second lubricating oil channels 16 are arranged, the first lubricating oil channel 14 and the second lubricating oil channel 16 are both of closed annular structures, the projections of the first lubricating oil channel 14 and the second lubricating oil channel 16 in the axial direction of the differential housing 1 are circular, furthermore, the contact surfaces of the half shaft and the half shaft mounting hole 13, and the contact surfaces of the half shaft gear 31 and the half shaft gear mounting hole 15 can be lubricated through the first lubricating oil passage 14 and the second lubricating oil passage 16, at least one lubricating oil groove 17 is formed in the end surface of one side of the half shaft gear mounting hole 15, which is far away from the half shaft mounting hole 13, one end of the lubricating oil groove 17, which is close to the half shaft gear mounting hole 15, is communicated with the half shaft gear mounting hole 15, and in the embodiment, two lubricating oil grooves 17 are symmetrically arranged;
planetary gear lubrication portion 2 includes planetary gear 21, planetary gear 21 is equipped with planetary gear gasket 23 with the one end of differential mechanism casing contact, the shaft hole has all been seted up with planetary gear gasket 23's axis position to planetary gear 21, planetary gear gasket 23 is the sphere annular structure, planetary gear 21 is the sphere annular structure with the contact surface of planetary gear gasket 23, differential mechanism casing and planetary gear 21, the fitting surface of planetary gear gasket 23 is concave spherical structure, in this embodiment, planetary gear 21 is equipped with four and connects through cross 25 week, planetary gear 21 and planetary gear gasket 23 all cup joint on cross 25. A third lubricating oil channel 22 is formed in one end, close to the planetary gear gasket 23, of the planetary gear 21, a fourth lubricating oil channel 24 is formed in one end, far away from the planetary gear 21, of the planetary gear gasket 23, the third lubricating oil channel 22 is an eccentric circular oil channel, one end, close to the axis of the planetary gear 21, of the third lubricating oil channel 22 is tangent to a shaft hole of the planetary gear 21, one end, far away from the axis of the planetary gear 21, of the third lubricating oil channel 22 is tangent to an excircle of a spherical annular contact surface on the planetary gear 21, and therefore when the planetary gear 21 and the planetary gear gasket 23 rotate for one circle relatively, any point on the contact surface of the planetary gear 21 and the planetary gear gasket 23 is swept twice by the third lubricating oil channel; the fourth lubricating oil channel 24 is an eccentric circular oil channel, one end, close to the axis of the planetary gear gasket 23, of the fourth lubricating oil channel 24 is tangent to the inner circle of the planetary gear gasket 23, one end, far away from the axis of the planetary gear gasket 23, of the fourth lubricating oil channel 24 is tangent to the outer circle of the planetary gear gasket 23, and when the planetary gear gasket 23 and the differential case rotate for one circle relatively, any point on the contact surface of the planetary gear gasket 23 and the differential case is swept twice by the fourth lubricating oil channel 24. The lubricating effect between the planetary gears 21 and the differential case is greatly improved.
The side gear lubricating part 3 comprises a side gear 31, a first lubricating surface 32 matched with a side gear half shaft and a second lubricating surface 33 matched with the inner wall of a differential case are arranged on the side gear 31, a side gear gasket 35 is arranged between the side gear 31 and the inner wall of the differential case, the side gear gasket 35 is in contact with the second lubricating surface 33, the side gear gasket 35 and the second lubricating surface 33 are both of a circular ring structure, a fifth lubricating oil channel 34 is arranged at one end, close to the side gear gasket 35, of the side gear 31, and a sixth lubricating oil channel 36 is arranged at least one end face of the side gear gasket 35. The fifth lubricating oil channel 34 is an eccentric annular oil channel, one end, close to the axis of the side gear 31, of the fifth lubricating oil channel 34 is tangent to the inner circle of the annular contact surface, and one end, close to the axis of the side gear 31, of the fifth lubricating oil channel 34 is tangent to the inner circle of the annular contact surface; the half-shaft gear gasket 35 is of a planar annular structure, one end, close to the axis of the half-shaft gear gasket, of the sixth lubricating oil channel 36 is tangent to the inner circle of the half-shaft gear gasket, one end, far away from the axis of the half-shaft gear gasket, of the sixth lubricating oil channel 36 is tangent to the outer circle of the half-shaft gear gasket, in this embodiment, the sixth lubricating oil channel 36 is formed in the end faces of the two sides of the half-shaft gear gasket 35, namely, the sixth lubricating oil channel 36 is formed in the contact faces of the half-shaft gear gasket 35, the second lubricating surface 33 and the.
The utility model discloses when using, four planetary gear 21 are connected in the differential mechanism casing through cross 25 week, two axle shaft gear 31's axle is inserted respectively and is located in the first casing 11 of both sides, in the side gear mounting hole 15 in the second casing 12, pass side gear mounting hole 13 simultaneously with side gear 31 fixed connection with the axle shaft, in the in-process of using, when the wheel speed of both sides is different, namely the rotational speed of both sides half shaft is the same, at this moment, differential mechanism casing, planetary gear 21, side gear 31 are all to static, there is not relative motion between differential mechanism casing, planetary gear 21, side gear 31, four planetary gear 21 only have the revolution and do not have the rotation, therefore the lubricated complex at this moment is minimum, carry out simple lubrication through the fluid inside and outside the differential mechanism casing, and cool off; when the speeds of the wheels on two sides are different, namely the rotational speeds of the half shafts on two sides are different, the rotational speeds of the side gears 31 on two sides are different, so that the planet gears 21 revolve and rotate, and the relative rotation between the differential case and the planet gears, between the side gears and the differential case, between the side gears and the side gear mounting holes, and between the half shafts and the side shaft mounting holes is caused, at this time, the relative rotation between the planet gears 21 and the differential case is lubricated by the third lubricating oil passage 22 arranged on the planet gears 21 and the fourth lubricating oil passage 24 arranged on the planet gear gasket 23, the relative movement between the side gears 31 and the inner wall of the differential case is lubricated by the fifth lubricating oil passage 34 arranged on the side gears 31 and the sixth lubricating oil passage 36 arranged on the side gear gasket 35, and the relative rotation between the shafts of the side gears 31 and the side gear mounting holes 15 is lubricated by the second lubricating oil passage 16 arranged in the side gear mounting holes 15, relative rotation to semi-axis and semi-axis gear mounting hole 13 is lubricated through setting up first lubricated oil duct 14 on semi-axis mounting hole 13, and then can provide good lubrication for having great load and relative rotation position in the differential mechanism, and the effectual extrusion phenomenon that appears between avoiding appearing the gear or between axle and the shaft hole has effectually reduced the wearing and tearing between the relative rotating member, has improved lubricated effect, has increased differential mechanism's life.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A differential lubrication system comprises a differential case, and a planetary gear and a side gear which are positioned in the differential case, wherein a half shaft mounting hole (13) and a side gear mounting hole (15) for mounting a half shaft and the side gear are arranged in the differential case, and the differential lubrication system is characterized by comprising a case lubrication part (1) arranged on the differential case, a planetary gear lubrication part (2) arranged on the planetary gear, and a side gear lubrication part (3) arranged on the side gear;
the shell lubricating part (1) comprises at least one first lubricating oil channel (14) arranged on the inner wall of the half axle mounting hole (13) and at least one second lubricating oil channel (16) arranged on the inner wall of the half axle gear mounting hole (15);
the planetary gear lubricating part (2) comprises a planetary gear (21), a planetary gear gasket (23) is arranged at one end, in contact with the differential case, of the planetary gear (21), a third lubricating oil channel (22) is formed in one end, close to the planetary gear gasket (23), of the planetary gear (21), and a fourth lubricating oil channel (24) is formed in one end, far away from the planetary gear (21), of the planetary gear gasket (23);
side gear lubrication portion (3) include side gear (31), side gear (31) with be equipped with side gear gasket (35) between the differential mechanism shells inner wall, side gear (31) are close to fifth lubricated oil duct (34) have been seted up to the one end of side gear gasket (35), sixth lubricated oil duct (36) have been seted up to at least one terminal surface of side gear gasket (35).
2. A differential lubrication system as claimed in claim 1, including first and second fixedly connected housings (11, 12), said first and second housings (11, 12) having axle shaft mounting holes (13), side gear mounting holes (15) formed therein.
3. A differential lubrication system as claimed in claim 1, wherein there are two of said first and second oil passages (14, 16), said first and second oil passages (14, 16) being of closed annular configuration, the first and second oil passages (14, 16) having a circular projection in the axial direction of the differential case.
4. A differential lubrication system as recited in claim 1, wherein at least one lubrication groove (17) is opened in an end surface of the side gear mounting hole (15) remote from the side shaft mounting hole (13), and an end of the lubrication groove (17) near the side gear mounting hole (15) communicates with the side gear mounting hole (15).
5. A differential lubrication system as claimed in claim 1, wherein the axial positions of the planetary gear (21) and the planetary gear spacer (23) are both provided with axial holes, the planetary gear spacer (23) is of a spherical annular structure, and the contact surface between the planetary gear (21) and the planetary gear spacer (23) is of a spherical annular structure.
6. The differential lubrication system according to claim 5, wherein the third oil passage (22) is an eccentric circular oil passage, one end of the third oil passage (22) close to the axis of the planetary gear (21) is tangent to the shaft hole of the planetary gear (21), and one end of the third oil passage (22) far from the axis of the planetary gear (21) is tangent to the outer circle of the spherical annular contact surface on the planetary gear (21).
7. A differential lubrication system as claimed in claim 5, wherein the fourth oil gallery (24) is an eccentric circular oil gallery, the end of the fourth oil gallery (24) near the axis of the planet gear spacer (23) being tangential to the inner circle of the planet gear spacer (23), and the end of the fourth oil gallery (24) away from the axis of the planet gear spacer (23) being tangential to the outer circle of the planet gear spacer (23).
8. A differential lubrication system as claimed in claim 1, wherein the contact surface of the side gear (31) with the inner wall of the differential case is a planar circular ring structure, the fifth oil gallery (34) is an eccentric annular oil gallery, the end of the fifth oil gallery (34) near the axis of the side gear (31) is tangent to the inner circle of the contact surface of the planar circular ring structure, and the end of the fifth oil gallery (34) away from the axis of the side gear (31) is tangent to the inner circle of the contact surface of the planar circular ring structure.
9. A differential lubrication system as claimed in claim 1, wherein said side gear shim (35) is of planar annular configuration, and the end of said sixth lubrication channel (36) proximal to the axis of said side gear shim is tangential to the inner circle of said side gear shim, and the end of said sixth lubrication channel (36) distal to the axis of said side gear shim is tangential to the outer circle of said side gear shim.
10. A differential lubrication system as claimed in claim 1, in which sixth oil galleries (36) are provided on both side end faces of the side gear spacer (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920986099.5U CN210715871U (en) | 2019-06-28 | 2019-06-28 | Differential lubrication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920986099.5U CN210715871U (en) | 2019-06-28 | 2019-06-28 | Differential lubrication system |
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| Publication Number | Publication Date |
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| CN210715871U true CN210715871U (en) | 2020-06-09 |
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| CN201920986099.5U Active CN210715871U (en) | 2019-06-28 | 2019-06-28 | Differential lubrication system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195777A (en) * | 2019-06-28 | 2019-09-03 | 安徽合力股份有限公司 | A kind of differential lubrication system |
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2019
- 2019-06-28 CN CN201920986099.5U patent/CN210715871U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195777A (en) * | 2019-06-28 | 2019-09-03 | 安徽合力股份有限公司 | A kind of differential lubrication system |
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